diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 62c49bd..ba0d81e 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -246,8 +246,8 @@ in
 
   # keep build-time deps around for offline-rebuilding
   nix.extraOptions = ''
-    gc-keep-outputs = true
-    gc-keep-derivations = true
+    keep-outputs = true
+    keep-derivations = true
     trusted-users = spiollinux
     experimental-features = nix-command
   '';